What exactly is vaginal discharge? Simply put, it’s a term that encompasses any non-period fluid that leaves your vagina, like vaginal lubrication, arousal fluid, day-old sperm, and cervical fluid. Cervical fluid (aka cervical mucus) is one major component of vaginal discharge. Produced by the cells of your cervix, cervical fluid changes throughout your cycle from dry to wet, creamy to eggy, stretchy to sticky.

Tracking your cervical fluid in Clue will give you a better indication of what hormonal changes and events are happening in your body at any given point. Understanding your own patterns can help you to know when your estrogen is rising, when ovulation has occurred, and when you might be able to skip the lube. Getting to know your vaginal discharge and cervical fluid cycle can also help you recognize when something may be off—from an infection to a hormonal issue.